User blog comment:DarkSlayer 3/Theories/@comment-6769189-20130721021808/@comment-775152-20130721044500

Not so sure I trust that interview. 10 years after DMC1, maybe. DMC3? Not likely.

And Alice traded her soul for "desirablilty." She was clearly shown changing physically from a young child to a young adult to somewhere in mid-teens. It's plausible, if not exactly a pretty solution, that these older "versions" of her are capable of becoming pregnant.